He's always been hit and miss in the transfer market. Yes, he's signed some worldies but it's easy not to notice some of the guff he's signed when he's not spending any money. He can't get away with poor signings now he's spending the amounts he is doing on players. The list of questionable signings below illustrates that for every John Fleck, Mark Duffy, John Egan, JOC, there's one of the below.
Ricky Holmes
Ryan Leonard
Chris Hussey
Samir Carruthers
Lee Evans
Clayton Donaldson
James Wilson
Ched Evans
Kean Bryan
Marvin Johnson
Ben Woodburn
Conor Washington
If he can rebuild a squad to get us back up then great but the circumstances will be completely different next season to what they were last time we were in the Championship.